diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 46b4de259b63b9f3a08fbcebf8a69441be9bcea6..3c97bf6fa2c0feb5ca950eb6f64054b035554a0e 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -365,7 +365,7 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet) {
         memcpy(pRes->pRsp, rpcMsg->pCont, pRes->rspLen);
       }
     } else {
-      pRes->pRsp = NULL;
+      taosTFree(pRes->pRsp);
     }
 
     /*